ATHENA MINERALOGY |
Mineral: | BRINROBERTSITE |
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Formula: | Na0,3Al4(Si4O10)2(OH)4.3,5H2O |
Crystal System: | Monoclinic pseudo Hexagonal |
IMA Number: | 1997-040 |
References: | MM 66 (2002), 605; MR 4 (2004), 345 |
Type Locality: | Penrhyn castle, Bangor, North Wales, England, United Kingdom |
Comments: | An ordered, mixed layer dioctahedral pyrophyllite-smectite |
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